Nissan Maxima Service and Repair Manual: Oil cooler
Removal and Installation
- Oil filter
- Oil cooler bolt
- Water pipe
- Water hose
- Oil cooler
- Oil pan
- Water pipe
- Relief valve
- Water drain plug
- Copper gasket
- Water connector
Engine coolant flow
WARNING: Be careful not to get burned, engine coolant and engine oil may be hot.
- When removing oil cooler, prepare a shop cloth to absorb any engine oil leakage or spillage.
- Completely wipe off any engine oil that adheres to the engine and the vehicle.
NOTE: When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spilling.
- Remove the engine under cover. Refer to EXT-15, "Exploded View".
- Remove the RH wheel and tire. Refer to WT-60, "Adjustment".
- Remove the front fender protector side cover (RH). Refer to EXT-23, "Exploded View".
- Drain engine coolant. CAUTION: Do not spill coolant on the drive belt.
- Disconnect water hoses from oil cooler.
- Remove the oil filter. Refer to LU-10, "Removal and Installation".
- Remove oil cooler.
INSPECTION AFTER REMOVAL
- Check oil cooler for cracks.
- Check oil cooler for clogging by blowing through coolant inlet. If necessary, replace oil cooler.
Oil Pressure Relief Valve
Inspect oil pressure relief valve for movement, cracks and breaks by pushing the ball. If replacement is necessary, remove valve by prying it out with a suitable tool. Install a new valve in place by tapping it.
Installation is in the reverse order of removal.
- Do not reuse O-ring.
- Do not reuse copper gasket.
- When installing the oil cooler, align the oil cooler stopper with the stopper of the oil pan.
- Replace oil pressure relief valve after every removal.
INSPECTION AFTER INSTALLATION
Start engine and check for engine oil and coolant leaks. Repair as necessary.